Bulgarian copper producer Aurubis plans to invest 260 million Bulgarian leva ($151.3 million) in its business in the country over the next four years.
These funds will be used to modernize the infrastructure at Aurubis' plant in Pirdop.
The company said it wants to modernize the plant's entire infrastructure in a few steps that is pipelines, drainage systems, communications, some buildings will be completely renovated.
Aurubis added that over the last two decades, $699.1 million has been invested in the production base.